drivers/nfc/st-nci/ndlc.h

   1 /*
   2  * NCI based Driver for STMicroelectronics NFC Chip
   3  *
   4  * Copyright (C) 2014-2015  STMicroelectronics SAS. All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef __LOCAL_NDLC_H_
  20 #define __LOCAL_NDLC_H_
  21
  22 #include <linux/skbuff.h>
  23 #include <net/nfc/nfc.h>
  24
  25 /* Low Level Transport description */
  26 struct llt_ndlc {
  27         struct nci_dev *ndev;
  28         struct nfc_phy_ops *ops;
  29         void *phy_id;
  30
  31         struct timer_list t1_timer;
  32         bool t1_active;
  33
  34         struct timer_list t2_timer;
  35         bool t2_active;
  36
  37         struct sk_buff_head rcv_q;
  38         struct sk_buff_head send_q;
  39         struct sk_buff_head ack_pending_q;
  40
  41         struct work_struct sm_work;
  42
  43         struct device *dev;
  44
  45         /*
  46          * < 0 if hardware error occurred
  47          * and prevents normal operation.
  48          */
  49         int hard_fault;
  50         int powered;
  51 };
  52
  53 int ndlc_open(struct llt_ndlc *ndlc);
  54 void ndlc_close(struct llt_ndlc *ndlc);
  55 int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb);
  56 void ndlc_recv(struct llt_ndlc *ndlc, struct sk_buff *skb);
  57 int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev,
  58         int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id);
  59 void ndlc_remove(struct llt_ndlc *ndlc);
  60 #endif /* __LOCAL_NDLC_H__ */